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Cendrowski K, Federowicz K, Techman M, Chougan M, El-Khayatt AM, Saudi HA, Kędzierski T, Mijowska E, Strzałkowski J, Sibera D, Abd Elrahman M, Sikora P. Functional Bi 2O 3/Gd 2O 3 Silica-Coated Structures for Improvement of Early Age and Radiation Shielding Performance of Cement Pastes. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:168. [PMID: 38251133 PMCID: PMC10819170 DOI: 10.3390/nano14020168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/23/2024]
Abstract
This study presents a new approach towards the production of sol-gel silica-coated Bi2O3/Gd2O3 cement additives towards the improvement of early mechanical performance and radiation attenuation. Two types of silica coatings, which varied in synthesis method and morphology, were used to coat Bi2O3/Gd2O3 structures and evaluated as a cement filler in Portland cement pastes. Isothermal calorimetry studies and early strength evaluations confirmed that both proposed coating types can overcome retarded cement hydration process, attributed to Bi2O3 presence, resulting in improved one day compressive strength by 300% and 251% (depending on coating method) when compared to paste containing pristine Bi2O3 and Gd2O3 particles. Moreover, depending on the type of chosen coating type, various rheological performances of cement pastes can be achieved. Thanks to the proposed combination of materials, both gamma-rays and slow neutron attenuation in cement pastes can be simultaneously improved. The introduction of silica coating resulted in an increment of the gamma-ray and neutron shielding thanks to the increased probability of radiation interaction. Along with the positive early age effects of the synthesized structures, the 28 day mechanical performance of cement pastes was not suppressed, and was found to be comparable to that of the control specimen. As an outcome, silica-coated structures can be successfully used in radiation-shielding cement-based composites, e.g. with demanding early age performances.
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Affiliation(s)
- Krzysztof Cendrowski
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-311 Szczecin, Poland; (K.C.); (K.F.); (M.T.); (J.S.); (D.S.)
| | - Karol Federowicz
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-311 Szczecin, Poland; (K.C.); (K.F.); (M.T.); (J.S.); (D.S.)
| | - Mateusz Techman
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-311 Szczecin, Poland; (K.C.); (K.F.); (M.T.); (J.S.); (D.S.)
| | - Mehdi Chougan
- Department of Civil and Environmental Engineering, Brunel University London, Uxbridge UB8 3PH, UK;
| | - Ahmed M. El-Khayatt
- Department of Physics, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11564, Saudi Arabia;
- Reactor Physics Department, Nuclear Research Centre, Atomic Energy Authority, Cairo 13759, Egypt
| | - H. A. Saudi
- Department of Physics, Faculty of Science, Al-Azhar University, Women Branch, Nasr City 11754, Egypt;
| | - Tomasz Kędzierski
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland; (T.K.); (E.M.)
| | - Ewa Mijowska
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, 70-310 Szczecin, Poland; (T.K.); (E.M.)
| | - Jarosław Strzałkowski
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-311 Szczecin, Poland; (K.C.); (K.F.); (M.T.); (J.S.); (D.S.)
| | - Daniel Sibera
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-311 Szczecin, Poland; (K.C.); (K.F.); (M.T.); (J.S.); (D.S.)
| | - Mohamed Abd Elrahman
- Structural Engineering Department, Mansoura University, Mansoura City 35516, Egypt;
| | - Pawel Sikora
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, 70-311 Szczecin, Poland; (K.C.); (K.F.); (M.T.); (J.S.); (D.S.)
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